Overview
overview
8Static
static
3viewbot.zip
windows10-2004-x64
1viewbot.zip
windows11-ltsc_2024-x64
1viewbot/0x...ot.exe
windows10-2004-x64
6viewbot/0x...ot.exe
windows11-ltsc_2024-x64
3viewbot/go.mod
windows10-2004-x64
6viewbot/go.mod
windows11-ltsc_2024-x64
8viewbot/go.sum
windows10-2004-x64
3viewbot/go.sum
windows11-ltsc_2024-x64
3viewbot/main.js
windows10-2004-x64
3viewbot/main.js
windows11-ltsc_2024-x64
8Analysis
- user interaction
yes - max time kernel
899s - max time network
376s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
20/08/2026, 04:27
Static task
static1
Behavioral task
behavioral1
Sample
viewbot.zip
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
viewbot.zip
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral3
Sample
viewbot/0x21 viewbot.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
viewbot/0x21 viewbot.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral5
Sample
viewbot/go.mod
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
viewbot/go.mod
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral7
Sample
viewbot/go.sum
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
viewbot/go.sum
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral9
Sample
viewbot/main.js
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
viewbot/main.js
Resource
win11ltsc2024-20260709-en
General
- Target viewbot/go.mod
- Size 218B
- Sample260820-e227lasvfy
- SHA256 946ff61e139546b0e1eda8a74e70fec67a99e8f8f60a71a9035d4b5f4ab5b303
- MD5 bd05a3a1988217b3fc1b7c33803561cd
- SHA1 12c09520bdf2d995704d7fe9fdb992960c830636
- SHA512 8604dc779d5641de906d5c7ea13a9fbddf6cc81b01ce29b93f52ab26bfede29419a4537bdb791dad5771239698e24ac53fe34c031b2c2ff61ffaa2ed53bed3ae
- TLSH T1C2D0A79067D868C93A1144C4D44640004EF1C060BF6DE1BC1CB32974946A491434E523
- MD5 SHA1 SHA512 TLSH
Malware Config
Signatures
- Drops desktop.ini file(s) 7 IoCs
description ioc Process File opened for modification C:\Users\Public\Videos\desktop.ini wmplayer.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini wmplayer.exe File opened for modification C:\Users\Public\Pictures\desktop.ini wmplayer.exe File opened for modification C:\Users\Admin\Music\desktop.ini wmplayer.exe File opened for modification C:\Users\Public\desktop.ini wmplayer.exe File opened for modification C:\Users\Public\Music\desktop.ini wmplayer.exe File opened for modification C:\Users\Admin\Videos\desktop.ini wmplayer.exe - Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\M: unregmp2.exe File opened (read-only) \??\O: wmplayer.exe File opened (read-only) \??\Q: wmplayer.exe File opened (read-only) \??\R: wmplayer.exe File opened (read-only) \??\A: unregmp2.exe File opened (read-only) \??\B: unregmp2.exe File opened (read-only) \??\N: unregmp2.exe File opened (read-only) \??\U: unregmp2.exe File opened (read-only) \??\G: wmplayer.exe File opened (read-only) \??\K: wmplayer.exe File opened (read-only) \??\T: wmplayer.exe File opened (read-only) \??\X: wmplayer.exe File opened (read-only) \??\G: unregmp2.exe File opened (read-only) \??\H: unregmp2.exe File opened (read-only) \??\K: unregmp2.exe File opened (read-only) \??\Q: unregmp2.exe File opened (read-only) \??\R: unregmp2.exe File opened (read-only) \??\Z: unregmp2.exe File opened (read-only) \??\I: wmplayer.exe File opened (read-only) \??\Z: wmplayer.exe File opened (read-only) \??\H: wmplayer.exe File opened (read-only) \??\S: unregmp2.exe File opened (read-only) \??\W: unregmp2.exe File opened (read-only) \??\X: unregmp2.exe File opened (read-only) \??\Y: unregmp2.exe File opened (read-only) \??\E: wmplayer.exe File opened (read-only) \??\L: wmplayer.exe File opened (read-only) \??\S: wmplayer.exe File opened (read-only) \??\U: wmplayer.exe File opened (read-only) \??\Y: wmplayer.exe File opened (read-only) \??\P: unregmp2.exe File opened (read-only) \??\V: unregmp2.exe File opened (read-only) \??\M: wmplayer.exe File opened (read-only) \??\P: wmplayer.exe File opened (read-only) \??\V: wmplayer.exe File opened (read-only) \??\W: wmplayer.exe File opened (read-only) \??\O: unregmp2.exe File opened (read-only) \??\T: unregmp2.exe File opened (read-only) \??\J: wmplayer.exe File opened (read-only) \??\I: unregmp2.exe File opened (read-only) \??\A: wmplayer.exe File opened (read-only) \??\B: wmplayer.exe File opened (read-only) \??\N: wmplayer.exe File opened (read-only) \??\E: unregmp2.exe File opened (read-only) \??\J: unregmp2.exe File opened (read-only) \??\L: unregmp2.exe - Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll svchost.exe File opened for modification C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll svchost.exe - System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wmplayer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language unregmp2.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeShutdownPrivilege 3188 wmplayer.exe Token: SeCreatePagefilePrivilege 3188 wmplayer.exe Token: SeShutdownPrivilege 600 unregmp2.exe Token: SeCreatePagefilePrivilege 600 unregmp2.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3188 wmplayer.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3188 wrote to memory of 3080 3188 wmplayer.exe 85 PID 3080 wrote to memory of 600 3080 unregmp2.exe 86
Processes
-
C:\Program Files (x86)\Windows Media Player\wmplayer.exe"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:9 /Open "C:\Users\Admin\AppData\Local\Temp\viewbot\go.mod"1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3188 -
C:\Windows\SysWOW64\unregmp2.exe"C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\system32\unregmp2.exe"C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT3⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
PID:600
-
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost1⤵
- Drops file in Windows directory
PID:2172
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Media Player\CurrentDatabase_400.wmdb
- Size 256KB
- SHA256 b38128ca22c1d228ddb37adb30ca6cddd0e45ec934394e1aa517d6cd7d1cb1f7
- MD5 834456e53a620982f761674278998dc9
- SHA1 f3b866df2001b6af56cf96ae9d0c755677250369
- SHA512 33a0839c96caf44d66c7478148f90ea95490ec0e77335765408e42bce50a4f339c36cfc776637de09e91f3f63efd6e039309245457b7c0510ffcf55a304deed2
- SSDEEP 768:57KGVp3zT13VuI61HOdrrA9abhr1vfEwPRzitFrz:79
- TLSH T1F544E037D4A1B094DB2CB471E2AC0F88B973240701E415845FF8A9BDB7277D6861F6EA
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Microsoft\Media Player\CurrentDatabase_400.wmdb
- Size 1024KB
- SHA256 653c2a5303bf8d7bc1edd7b6a93713e98b09ebc3dbab57428f8157bf399d6245
- MD5 83e362edec2fc50e335196e2c52c440c
- SHA1 e11e4fae2177e79e3a62424d05eb641b0828166f
- SHA512 6e938fa16065563edc6f7b6dcfd135e2ade23ce1cf8d764ddc14e482cf26521ea68e241ab2c868673316db65d087d472e492b737d800bb896209362674d55f6d
- SSDEEP 768:B0aleDxcg7KGVp3zT13VuI61HOdrrA9abhr8fEwPRzitFrzAqUmNKX08oJImdbaP:nZP2tFP3vqY8vqEM3TaBacgW
- TLSH T12E259537D190B0C5CE2CB071E9ED8F09BA63A10B11A052465FF8A57E7A633D99D0B1E7
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Microsoft\Media Player\LocalMLS_3.wmdb
- Size 68KB
- SHA256 5dc5e06eba36c9c1b19c36384e7ef2278fe6a4b8cff47707c4413bbdaa07b4b5
- MD5 664d95005aa6724047f13087c8cde85f
- SHA1 7ee33ae46f5aedc9a5de4c9b3385bed93e0b8e9c
- SHA512 901216843616827f26c197bac604680885fa43314e3cee06e846459f6cab084eaa870afd244d8702eeeab207922352a8f8b6089e8967fcdd16e6245c23a823f8
- SSDEEP 96:Nre40g6QwvN10AsH3P9ZltgNXtxUMUsth7XtiUMbst1UMlst2OXtrL2tILXtotPM:pPeAFonSngnq
- TLSH T1BA63D42062E55A4AF3F73E7579FA51171FBA38A16E35D19D0252464E0D60F3CDE30B22
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows Media\12.0\WMSDKNS.DTD
- Size 498B
- SHA256 644fbcdc20086e16d57f31c5bad98be68d02b1c061938d2f5f91cbe88c871fbf
- MD5 90be2701c8112bebc6bd58a7de19846e
- SHA1 a95be407036982392e2e684fb9ff6602ecad6f1e
- SHA512 d618b473b68b48d746c912ac5fc06c73b047bd35a44a6efc7a859fe1162d68015cf69da41a5db504dcbc4928e360c095b32a3b7792fcc6a38072e1ebd12e7cbe
- TLSH T15BF027AD4BE26C59323110903E78A0B0DD05F0B3645B3A6970CE5C7679E7D9C0407FD1
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows Media\12.0\WMSDKNS.XML.bak
- Size 9KB
- SHA256 cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b
- MD5 7050d5ae8acfbe560fa11073fef8185d
- SHA1 5bc38e77ff06785fe0aec5a345c4ccd15752560e
- SHA512 a7a295ac8921bb3dde58d4bcde9372ed59def61d4b7699057274960fa8c1d1a1daff834a93f7a0698e9e5c16db43af05e9fd2d6d7c9232f7d26ffcff5fc5900b
- SSDEEP 96:/YkZRAF6zyHUhm77yB1pZYCEnfHrHH7B6xTGH+YCLV3zwULJEYCJWyHBt3zwFRh+:/2FV0bBPCfUdY
- TLSH T10022A2A194818DD206290E275DB95C0DDA8CE9D3832C24997C9EEB7FDFB1C00355FB6A
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\wmsetup.log
- Size 1KB
- SHA256 d476fb07744259235156f0d0182ce0805a20668585f68598263a3049155593bc
- MD5 3897916427819945f8144e0d4e85c135
- SHA1 fb5459efbd9ddc3be8b92a032874f110d483bfea
- SHA512 f99ee3b08fd01bc84cbf8e327670ed18e3b7c25a2c7e0557ab85cb1bc0000b9206a2e87e330e53e101dd54b222e07cc7a3ef40e433a0613b785d2e6325e02ff6
- TLSH T127216B571B4EE470C9E01BE71DEC8E2573BBC7CA8390D0A5B34DA029481352D5B3D06D
- MD5 SHA1 SHA512 TLSH